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The company built the Elgin National Watch Company Observatory in 1910 to maintain scientifically precise times in their watches. The company produced many of the self-winding wristwatch movements made in the United States, beginning with the 607 and 618 calibers (which were bumper wind) and the calibers 760 and 761 (30 and 27 jewels respectively).
The first Swiss quartz clock, which was made after World War II (left), on display at the International Museum of Horology in La Chaux-de-Fonds. During World War II, Swiss neutrality permitted the watch industry to continue making consumer time-keeping apparatus, while the major nations of the world shifted timing apparatus production to timing devices for military ordnance.
Eardley Norton, a most highly esteemed member of the Clockmakers' Company, was working between 1762 and 1794. There are clocks by him in the Royal Collection and many museums worldwide. Norton made an astronomical clock for George III which still stands in Buckingham Palace.
Developing quartz clocks for the consumer market took place during the 1960s. One of the first successes was a portable quartz clock called the Seiko Crystal Chronometer QC-951. This portable clock was used as a backup timer for marathon events in the 1964 Summer Olympics in Tokyo. [46]
Yoshikazu Akahane (died 1999), Japanese engineer, creator of Seiko's Spring Drive mechanical movement regulated by a quartz oscillator instead of a traditional escapement. Roberto Bertotti (born 1967), Italian watchmaker, fixing most of the watches, clocks, chronometers, Pendulum clocks, etc. Workshop in Rovereto, Italy.
The Waltham Watch Company, also known as the American Waltham Watch Co. and the American Watch Co., was a company that produced about 40 million watches, clocks, speedometers, compasses, time delay fuses, and other precision instruments in the United States of America between 1850 and 1957.
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